
The world's only manufacturer of true bolt action AR uppers. Patented 3-lug bolt technology with a sub-MOA guarantee. Made in Utah, USA.
The Only True Bolt Action AR in the World
Uintah Precision was born from Uintah Machine, a Utah-based manufacturer that originally built coal mining machinery. When work slowed in 2008–2010, founder Richard Hamilton faced a choice: lay off his team or pivot entirely.
Hamilton had long noticed that firearms companies were building AR "style" bolt actions — chassis conversions that looked like bolt actions but didn't function as one. He asked a simple question: why hadn't anyone built a true bolt action receiver? The answer was that it was genuinely difficult to engineer.
After 975,000 failed prototypes, one finally worked. Uintah Precision now holds the only patent for a true bolt action AR upper — a 3-lug bolt with a 60° throw that delivers genuine bolt action mechanics in an AR platform.

Patented 3-lug bolt with a 60° throw — the only genuinely true bolt action AR in the world. Not a chassis conversion, not a cosmetic modification. A real bolt action mechanism.
Every UPR and UP rifle ships with a sub-MOA accuracy guarantee using factory match grade ammunition. Precision backed by engineering.
The UPR upper pins directly onto any mil-spec standard AR lower. Keep your existing trigger, ergonomics, and magazine compatibility.
Designed and manufactured in Utah. Every component built to exceed MilSpec. American precision engineering.

Product Gallery




Complete Bolt Action AR-15 Rifle — Ready to Shoot
The UP-15 Complete includes the UPR-15 upper receiver mated to a Uintah Precision lower receiver. A fully assembled bolt action AR-15 ready to configure with your preferred optic and accessories.

True bolt action performance in real-world conditions.

Down to the Details

Field Position

True Bolt Action

22 ARC Ranger

11in 338 ARC
Uintah Precision products are available in the UK exclusively through Steelfoot Imports. Contact us to discuss stock availability, pricing, and RFD transfer arrangements for your dealership.